{
  "$type": "site.standard.document",
  "description": "Provided is a negative electrode active material that contains silicon clathrate II and that is suitable for a negative electrode of a lithium ion secondary battery. The negative electrode active material includes a silicon material in which silicon clathrate II represented by composition formula…",
  "path": "/patents/1285002",
  "publishedAt": "2021-03-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M4/386",
    "KABUSHIKI KAISHA TOYOTA JIDOSHOKKI"
  ],
  "textContent": "Provided is a negative electrode active material that contains silicon clathrate II and that is suitable for a negative electrode of a lithium ion secondary battery. The negative electrode active material includes a silicon material in which silicon clathrate II represented by composition formula NaSi(≤x≤) is contained and a volume of a pore having a diameter of not greater than nm is not less than cm/g.",
  "title": "NEGATIVE ELECTRODE ACTIVE MATERIAL CONTAINING SILICON CLATHRATE II"
}